A stack of boards is 2 1/5 inches high and there are 21 boards. How many inches high is the stack?

A pyramid is A. any one of the individual surfaces of a solid object. B. a pattern of two-dimensional shapes that can be folded to make a model of a solid figure. C.

Which expression does NOT have the value 1/81 a. 3-2 • 3-2 b. 3-4 c. (3-2) 2 d. - 32 • - 32

Create an expression that is equivalent to 79.86-17.61

X^2-18x+67=0 Solve the quadratic equation by completing the square.

The scientific notation of 0.004897

You have save $125 to put toward a new bike that cost $500. If you save $20 per week, how long will it take you to save enough to cover the cost? (Inequality)

Macy wants to find the sum of 61,043 and 23,948. Her answer is 37,095. Find and correct her mistake

Divide. -24/7 enter the answer as a mixed number, in simplified form, in the box

Biff's suspension bridge has 40-foot towers spaced 80 feet apart. The main cable reaches down to a height of 5 feet from the level road surface; seven vertical cables are spaced 10 feet from each tower and from one another.

X - 2 = 16 A. 14 B. 18 C. 21 D. 12